Answer:
14 did not finish under 4 hours.
Step-by-step explanation:
Givens
Total number of competitors = 35
% who finish under 4 hours = 60%
Formula
Those who did not = 35 - 60%*35
Solution
Those who did finish under 4 hours = 35 * 60%
Those who did finish under 4 hours = 35*60/100 = 2100/100
Those who did finish under 4 hours = 21
Those who did not = 35 - 35*60/100
Those who did not = 35 - 21
Those who did not = 14
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There is another way to do this. Realize that 40% did not finish the race in under 4 hours.
Those who did not finish in under 4 hours = 35*40/100 = 1400 / 100 = 14